Updated Sep 2, 2026
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Lockheed Martin Leads $3.5 Billion Bid to Acquire Anti-Submarine Specialist Ultra Maritime

Lockheed Martin is the leading contender to acquire Ultra Maritime, a naval defense company valued at $3.5 billion, in a deal that would hand the U.S. defense giant control of a specialist in anti-submarine warfare technology. Ultra Maritime is currently owned by private equity firm Advent International.

By Corinne Ashford2 min read
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Key takeaways

  • Lockheed Martin is the frontrunner to acquire anti-submarine warfare specialist Ultra Maritime in a deal valued at $3.5 billion.
  • Ultra Maritime is currently owned by private equity firm Advent International, which would fully exit its position under the proposed transaction.
  • Ultra Maritime specializes in anti-submarine warfare technology, giving Lockheed a concentrated naval detection and warfare capability.
  • The reported $3.5 billion figure and Lockheed Martin's frontrunner status have not been confirmed by the companies, and no closing timeline has been disclosed.
  • Advent International has not publicly commented on a potential sale process for Ultra Maritime.

Lockheed Martin is the leading contender to acquire Ultra Maritime, a naval defense company valued at $3.5 billion, in a deal that would hand the U.S. defense giant control of a specialist in anti-submarine warfare technology. Ultra Maritime is currently owned by private equity firm Advent International.

A High-Stakes Naval Defense Transaction

Ultra Maritime's core focus is anti-submarine technology, a capability that sits at the intersection of undersea warfare and great-power competition. Advent International, the private equity firm that owns Ultra Maritime, would exit its position under the proposed transaction. At $3.5 billion, the deal would mark a significant acquisition for Lockheed Martin in the maritime defense segment.

Advent International's Exit

Advent International has positioned Ultra Maritime as a standalone naval defense platform since acquiring it. A sale to Lockheed Martin would represent a full exit by the private equity firm. The $3.5 billion price tag signals the premium that buyers are willing to attach to specialized undersea defense capabilities.

What Ultra Maritime Brings to Lockheed

Ultra Maritime's specialization in anti-submarine technology makes it a targeted acquisition rather than a broad-based defense roll-up. Anti-submarine warfare systems are in demand as navies worldwide update aging capabilities. Lockheed Martin, should the deal close, would add a concentrated naval detection and warfare capability to its existing defense portfolio.


The reported $3.5 billion figure and Lockheed Martin's frontrunner status have not been confirmed by the companies. No closing timeline has been disclosed. Advent International has not publicly commented on a potential sale process for Ultra Maritime.

Frequently asked

Who is trying to acquire Ultra Maritime?

Lockheed Martin is the leading contender to acquire Ultra Maritime, according to the report.

How much is the deal worth?

The transaction values Ultra Maritime at $3.5 billion, though this figure has not been confirmed by the companies.

What does Ultra Maritime specialize in?

Ultra Maritime's core focus is anti-submarine warfare technology, sitting at the intersection of undersea warfare and great-power competition.

Who currently owns Ultra Maritime?

Ultra Maritime is currently owned by private equity firm Advent International, which would exit its position if the deal closes.

Has a closing timeline been announced?

No closing timeline has been disclosed, and the companies have not confirmed the reported details of the transaction.